US8216465B2 - Filter assembly - Google Patents
Filter assembly Download PDFInfo
- Publication number
- US8216465B2 US8216465B2 US13/240,970 US201113240970A US8216465B2 US 8216465 B2 US8216465 B2 US 8216465B2 US 201113240970 A US201113240970 A US 201113240970A US 8216465 B2 US8216465 B2 US 8216465B2
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- water
- cartridge
- filter assembly
- lid
- enclosure
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 192
- 238000001914 filtration Methods 0.000 claims abstract description 100
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 16
- 239000004626 polylactic acid Substances 0.000 claims abstract description 16
- 230000005484 gravity Effects 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 19
- 238000000151 deposition Methods 0.000 abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 9
- 230000000717 retained effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241001122767 Theaceae Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
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- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
- C02F1/003—Processes for the treatment of water whereby the filtration technique is of importance using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/006—Cartridges
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/04—Location of water treatment or water treatment device as part of a pitcher or jug
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/06—Mounted on or being part of a faucet, shower handle or showerhead
Definitions
- the invention relates to filter assemblies for a portable water filtration apparatus. More specifically, the invention relates to filter assemblies that are environmentally friendly.
- Portable water filtration apparatus such as those sold under the Brita trade mark, include countertop water filters and faucet mounted water filters. These water filters typically include a filter assembly that includes a filtration media, such as activated carbon. These filter assemblies are fitted into the water filters. For example, a filter assembly may be fitted onto or into a funnel member coupled to a receiving container (a water reservoir) for collecting liquid, or onto a fixture coupled to a faucet wherein the water from the faucet flows through the fixture prior to being dispensed.
- a filter assembly may be fitted onto or into a funnel member coupled to a receiving container (a water reservoir) for collecting liquid, or onto a fixture coupled to a faucet wherein the water from the faucet flows through the fixture prior to being dispensed.
- Known filter assemblies generally include a cartridge which houses granulated carbon.
- U.S. Pat. No. 6,012,232 to Weyrauch and U.S. Pat. No. 6,099,728 to Bairischer describe a cartridge in the form of a closed cup, which has holes on the upper and lower portions through which water passes as it is filtered.
- the cup houses granulated carbon, and the holes on the upper and lower portions are covered with a sieve cloth to prevent the granulated carbon from escaping. Over time, the granulated carbon in such cartridges becomes spent, and the user must dispose of the cartridge and replace it with a new one.
- filter assemblies that are environmentally friendly are provided.
- Various embodiments are provided that may be used individually or in combination. Accordingly, a filter cartridge that is openable to receive a water-permeable enclosure that houses filter media, preferably lose granular filter material, is provided. Alternately, or in addition, a filter enclosure, or part thereof, that is made of polylactic acid, is provided.
- the present invention provides a filter assembly for a portable water filtration apparatus.
- the filter assembly comprises a through-flow cartridge, wherein the cartridge has an accessible cavity.
- a water permeable enclosure is removably received in the accessible cavity.
- the cavity may be openable (such as by the cartridge having a moveable or removable lid) or the cartridge may be provided with an access slot though which a cartridge may be inserted.
- the permeable enclosure houses a filtration media.
- the filter assembly is removably received in the water filtration apparatus.
- the cavity may be opened while the filter assembly is positioned in the water filtration apparatus.
- the filter media is preferably lose granular material, such as may be used to filter water which passes through the filter material due to gravity.
- the present invention provides a method for filtering water using a water filter apparatus.
- the method comprises opening a through-flow cartridge, depositing a filter packet in the cartridge, closing the cartridge, depositing the cartridge in the portable water filtration apparatus, and passing water through the cartridge.
- the cartridge is typically comprised of plastic. Plastic is typically not biodegradable and will remain in landfill for an extended period of time. By replacing the filter media and reusing the cartridge, the amount of waste that is sent to landfills is reduced. Further, much or substantially all of the waste that is sent to land fill, namely the filter media, may be a natural source material, e.g., carbon and mineral stone.
- a further advantage of the present invention is that the space required to store replacement permeable enclosures is less then the space required to store replacement cartridges.
- the components of a replacement cartridges are relatively inexpensive. However, the volume occupied by them has a substantial impact on the cost of shipping and warehousing the product. Accordingly, by providing replacement permeable enclosures, costs and storage space may be reduced.
- a filter assembly for a household water filtration apparatus comprising:
- the through-flow cartridge is removably received in the household water filtration apparatus. In other embodiments, a portion of the through-flow cartridge is permanently secured to the household water filtration apparatus.
- the through flow cartridge is positioned in a gravity fed water flow passage from a feed water reservoir to a filtered water reservoir of the household water filtration apparatus.
- the through-flow cartridge comprises a cup having an openable lid.
- the cup and the lid have mating screw threads. However, they may be moveably connected to each other by any means so as to permit access to the cavity.
- the openable lid is accessible when a lid of the household water filtration apparatus is opened.
- the permeable enclosure comprises a mesh.
- the mesh is non-woven.
- the mesh may comprise hydrophobic filaments.
- the mesh may be a plastic and, preferably, comprises at least one of polypropylene and nylon.
- the permeable enclosure has a longitudinally extending sidewall, a water permeable top, and a water permeable bottom.
- the longitudinally extending sidewall is impermeable to water and the water permeable top and a water permeable bottom comprise a mesh.
- the longitudinally extending sidewall is rigid.
- the permeable enclosure is without a fixed shape.
- the through-flow cartridge comprises a lower portion having apertures and an upper portion having apertures and the filter assembly further comprises at least one support structure that positions the permeable enclosure within the cavity and spaced from at least the lower apertures.
- the at least one support structure retains the permeable enclosure spaced from the apertures of the lower portion and the upper portion. Accordingly, there may be an upper and a lower support structure.
- the at least one support structure is removable from the cartridge. Alternately, they may be formed as part of the cartridge.
- the support structures comprise an open web disc.
- the filtration media comprises at least one member selected from the group carbon, mineral stone and ceramic.
- the filter material may be any of those known in the art for gravity fed water filters.
- the household water filtration apparatus further comprises a filtered water reservoir that is less than 5L in volume.
- the household water filtration apparatus comprises a container that is fabricated from glass.
- the water filtration apparatus is a portable water filtration apparatus and, more preferably, a countertop water filtration apparatus.
- a method for filtering water using a household water filtration apparatus comprising:
- the method further comprises removing the filter packet from the cartridge, and depositing another filter packet in the cartridge.
- the method further comprises placing a first support structure in the cartridge, below the filter packet.
- the through-flow cartridge comprises a lower portion having apertures, and the method further comprising retaining the filter packet spaced from the apertures of the lower portion.
- the method further comprises placing another support structure in the cartridge, above the filter packet.
- the through-flow cartridge comprises an upper portion having apertures, and the method further comprises retaining the filter packet spaced from the apertures of the upper portion.
- the household water filtration apparatus is portable and the method further comprises transporting the household water filtration apparatus to a faucet to add water to a feed water reservoir.
- the method further comprises providing a water filtration apparatus with a filtered water reservoir having a volume of less than 5L.
- the method further comprises opening a lid of the water filtration apparatus and subsequently opening a lid of the through-flow cartridge.
- the through-flow cartridge may be removed from the water filtration apparatus prior to opening the lid of the through-flow cartridge.
- the lid of the through-flow cartridge may be opened while the through-flow cartridge is positioned in the water filtration apparatus.
- the method further comprises simultaneously opening a lid of the water filtration apparatus and opening a lid of the through-flow cartridge.
- the present invention provides a filter assembly for a household water filtration apparatus, the filter assembly comprising:
- An advantage of this broad aspect is that the water entering the filter assembly is substantially prevented from bypassing the enclosure. Accordingly, most or all of the water is directed into the enclosure, and contacts the filtration media. Accordingly, most or all of the water is subjected to filtration.
- the through-flow cartridge is openable to access the cavity.
- the cartridge may comprise a cup and an openable lid.
- the filter assembly comprises an annular gap between the cup and the water-permeable enclosure, and the water-permeable enclosure engages the through-flow cartridge to inhibit flow of water through the annular gap.
- the through flow cartridge comprises a cup and a lid
- the through-flow cartridge comprises at least one seating surface extending from the cup around an outer portion of the cavity
- the lid has an engagement surface that is positioned above the seating surface when the lid is in a closed position.
- the water-permeable enclosure comprises a flange extending from an upper portion of the water-permeable enclosure. The flange is securable between the seating surface and the engagement surface when the lid is in the closed position.
- the permeable enclosure comprises a water impermeable longitudinally extending sidewall, a water permeable top, and a water permeable bottom.
- at least one of the longitudinally extending sidewall, water permeable top, and water permeable bottom are fabricated from polylactic acid.
- the cup and the lid comprise mating screw threads, and the flange is held between the engagement surface and the seating surface when the lid and the cup are screwed together.
- the engagement surface, flange, and seating surface form a water impermeable seal.
- the through-flow cartridge is removably received in the household water filtration apparatus.
- a filter assembly for a water filtration apparatus wherein at least a portion of the container that houses the filter media is fabricated from polylactic acid.
- Embodiments in accordance with this broad aspect may be advantageous because the container may be biodegradable. Accordingly, rather than discarding the container, the container may be composted. Surprisingly, it has been determined that despite deteriorating when in contact with water, such a container may have a sufficient shelf life to provide a commercial product. Typically, filter media is damp when shipped. Therefore, the container will be in contact with water during packaging, shipment, storage and use. Despite this, if the container is generally housed in a cold environment, such as a refrigerator, the shelf life of the container may be roughly equal to (or greater than) the filtration capacity of the filtration media. Accordingly, the container may be biodegradable without reducing the shelf life of the filter assembly.
- a filter assembly for a water filtration apparatus comprising at least one container housing filtration media wherein at least a portion of the container is fabricated from polylactic acid.
- the container is received in a filter cartridge.
- the filter cartridge comprises an accessible cavity and the container is removably received in the cavity.
- the container comprises a through-flow cartridge.
- the container may comprise a water impermeable longitudinally extending sidewall, a water permeable top, and a water permeable bottom and the sidewall is fabricated from polylactic acid
- the filtration media directly contacts the container.
- FIG. 1 is a front elevation view of a portable water treatment apparatus including a filter assembly as is known in the art;
- FIG. 2 is a perspective drawing of an embodiment of a filter assembly of the present invention
- FIG. 3 is an exploded view of the filter assembly of FIG. 2 ;
- FIG. 4 is a partial longitudinal cross-section along the line 4 - 4 of the embodiment of FIG. 2 ;
- FIG. 5 is an enlarged cross-section of area A of FIG. 4 ;
- FIG. 6 is an enlarged cross-section of area B of FIG. 4 ;
- FIG. 7 is a partial longitudinal cross-section along line 4 - 4 of the embodiment of FIG. 2 , shown together with a portable water treatment apparatus;
- FIG. 8 is a partial longitudinal cross-section along line 4 - 4 of an alternate embodiment of FIG. 2 wherein a portion of the cartridge is secured to the water treatment apparatus, shown together with a portable water treatment apparatus, with a lid of a cartridge opened, and with a permeable enclosure partially removed from the cartridge;
- FIG. 9A is a perspective drawing of an alternate embodiment of a filter assembly of the present invention.
- FIG. 9B is a cross section taken along line B-B in FIG. 9A ;
- FIG. 9C is an enlarged drawing of the region shown in box C in FIG. 9B .
- a household water treatment apparatus 10 comprises a container 12 having a filtered water reservoir 14 , an optional handle 16 and an optional pour spout 18 .
- the volume of filtered water reservoir may be 0.5-5 liters, and preferably less than 2 liters. Accordingly, household water treatment apparatus 10 may be easily carried by a user by means of handle 16 and accordingly is typically used in household environments.
- household water treatment apparatus 10 comprises a portable water treatment apparatus. Such a portable water treatment apparatus 10 may be stored on a counter top in a kitchen or in a refrigerator.
- Portable water treatment apparatus 10 is also provided with an upper portion that defines a feed water reservoir 22 .
- the feed water reservoir may be filed with water that is to be treated by being passed, due to gravity, through filter assembly 28 .
- Filter assembly 28 is removably receivable in household water treatment apparatus 10 , such as by being slideable receivable in filter assembly holder 24 .
- Filter assembly holder has an open or porous bottom 26 through which filtered water passes into filtered water reservoir 14 .
- household water treatment apparatus 10 may be of any design known in the art. Further, household water treatment apparatus 10 may be mounted to a faucet, such as in a kitchen, and not require a feed water reservoir 22 . In such an embodiment, household water treatment apparatus 10 may be secured to the outlet of a faucet, such as by a screw thread, and filtered water provided when the valve to the faucet is turned on.
- the filter cartridge of this invention may be used with any such household water treatment apparatus 10 and, is preferably used with a counter top water filtration apparatus as exemplified in FIG. 1 .
- Filter assembly 100 may be sized to be received in or secured to any household water filtration apparatus 10 , such as the one exemplified in FIG. 1 .
- filter assembly 100 comprises a cartridge 102 , and an enclosure or filter packet 200 .
- Cartridge 102 is a through-flow cartridge.
- through-flow is achieved via a plurality of apertures 106 in top portion 108 and in bottom portion 110 of cartridge 102 .
- through-flow may be achieved in other ways.
- one or both of top and bottom portions 108 , 110 may have a porous wall and/or they may be generally open.
- top and bottom portions 108 , 110 need not be designed to retain filtration media within cartridge 102 (e.g., by having openings smaller than most of the particulate material of the filter media).
- Cartridge 102 has an accessible cavity 112 . That is, a user may access cavity 112 in order to insert and remove an enclosure 200 into cavity 112 .
- cartridge 102 may have one part that is removable from the rest of cartridge 102 , or moveable with respect to the rest of cartridge 102 , to provide an opening through which an enclosure 200 may be replaced.
- cartridge 102 comprises a cup 114 and a lid 116 .
- cup refers to any structure that is sized to fit into a household water treatment apparatus and, accordingly, is typically longitudinally extending and has a base portion and at least one side wall.
- the term ‘lid’ refers to any structure that may either partially or fully fit on the top portion of a cup. It will be appreciated that in other embodiments, lid 116 may be non-removably secured to cup 114 and bottom portion 110 may be removable. Alternately, or in addition, cup 114 may be dividable into two portions, such as by one portion, e.g., a top half, pivoting or being removable from another portion, e.g., a lower half.
- lid 116 may be either removable from or moveable relative to cup 114 , in order to provide access to cavity 112 .
- cup 114 and lid 116 may have mating screw threads 118 , 120 , which may be screwed together or unscrewed by a user to obtain access to cavity 112 .
- cup 114 and lid 116 may mate via a snap-fit, a bayonet fit, external latch or the like.
- lid 116 may be pivotally mounted to cup 114 . Once disassembled, one or both of cup 114 and lid 116 may be washed, such as by placing them in a dishwasher. In other embodiments, cup 114 and lid 116 may mate by other means. Alternately, lid 116 may be pivotally mounted to cup 114 (not shown). An advantage of such an embodiment is that lid 116 may not be misplaced by a user.
- cartridge 102 may not comprise a cup and a lid, and may be any other through-flow structure which can be removably received in or secured to a portable water filtration apparatus, and which has an accessible cavity for removably receiving enclosure 200 .
- cartridge 102 may comprise a container, for example a hollow cylinder, having a permanently open slot or opening that provides access to cavity 112 .
- Enclosure 200 is removably receivable in cavity 112 . That is, a user may insert enclosure 200 into and remove enclosure 200 from cavity 112 .
- Enclosure 200 is water permeable, and houses or contains a filtration media. Enclosure 200 may be of any size that is receivable in cavity 112 .
- Enclosure 200 may be fabricated from a mesh, which may be either woven, or non-woven, and is preferably non-woven.
- the mesh may be formed from hydrophobic filaments, for example polypropylene and/or nylon. It will be appreciated that the use of hydrophobic material is useful for preventing or minimizing degradation of enclosure 200 by absorption of water.
- the mesh may be fabricated from other plastics or natural fibres, such as silk.
- Enclosure 200 may be sufficiently rigid to retain a fixed shape.
- enclosure 200 may be cylindrical, for example, as shown in FIGS. 2 and 3 .
- enclosure 200 may be deformable, soft-sided, or without a fixed shape.
- enclosure 200 may have the same flexibility as a tea bag and, accordingly, need not have a fixed shape.
- Enclosure 200 houses or contains one or more filter media.
- the filtration media may be any substance used in the household water filter art.
- the filtration media may be granulated carbon.
- the pores or openings of the mesh are sized such that most, and preferably all or essentially all of the particles are retained in enclosure 200 .
- filter assembly 100 may comprise at least one support structure.
- lower support structure 202 may be a disc with an open web structure.
- the disc comprises an outer ring 208 and a plurality of radial arms 210 .
- the disc provides a support structure on which enclosure 200 may be received, and retained in a spaced relationship from apertures 106 of bottom portion 110 .
- support structure 202 may be, for example, a plate having apertures a ring, a cross, a bar, or any other structure that retains enclosure 200 in a position that is spaced apart from apertures 106 .
- lower support structure 202 may be placed inside cavity 112 prior to depositing enclosure 200 , in order to space enclosure 200 from apertures 106 in bottom portion 110 .
- support structure may be integrally formed with bottom portion 110 or it may be separately molded and removably or non-removably inserted in cartridge 102 .
- cup 114 is provided with a member to position lower support member 202 above apertures 106 and/or lower support member 202 is provided with members (e.g., feet) to position lower support member 202 above apertures 106 .
- lower support member 202 may be retained by a friction fit with inner surface 216 of cup 114 or a lip 206 may be provided on which lower support structure 202 may be seated.
- upper support structure 204 may be placed in cavity 112 after depositing enclosure 200 , in order to retain enclosure 200 spaced from apertures 106 in top portion 110 .
- Upper support structure 204 may be the same or different from lower support structure 202 .
- upper support structure 204 comprises a disc comprising an outer ring 212 and a plurality of radial arms 214 . If upper support structure 204 is not formed as part of cup 114 , cup 114 and/or lid 116 are provided with a member to position upper support structure 204 below apertures 106 and/or upper support structure 204 is provided with members (e.g., feet) to position upper support structure 204 below apertures 106 .
- upper support structure 204 may be retained by a friction fit between outer ring 212 and inner surface 216 of cup 114 or a lip 206 may be provided on which lower support structure 202 may be seated.
- support structures 202 , 204 may be integral with enclosure 200 .
- enclosure 200 comprises a longitudinally extending body having a rigid sidewall 218 , a water permeable top 220 and a water permeable bottom 222 .
- Sidewall 218 has a outer radial band 224 that has a diameter so as to be positioned beneath sidewall 218 .
- Sidewall 218 has a longitudinal extent such that when enclosure 200 is seated on lower support member 202 , band 224 seats upper support structure 204 against lip 206 .
- enclosure 200 is secured in position in a spaced relationship to apertures 106 of lid 116 and lower portion 110 . It will also be appreciated that if sidewall 218 is not water permeable, then water cannot bypass the filtration media in enclosure 200 but must pass through the filtration media.
- a radial band 224 may not be provided and enclosure 200 may be positioned in cavity 112 between lower support member 202 and upper member 204 .
- enclosure 200 may be deformable, soft-sided, or without a fixed shape and accordingly, in such an embodiment sidewalls 218 made of a mesh material may be provided.
- cartridge 102 comprises a cup 114 and a lid 116 , which define a cavity 112 , and a water permeable enclosure 200 housing a filtration media is receivable in the cavity 112 , as described hereinabove. Furthermore, in this embodiment, the water permeable enclosure and the through-flow cartridge 102 are configured to direct water into the enclosure
- the portion 904 of the through flow cartridge 102 comprises a seating surface 906 , that extends from the cup 114 around an outer portion of the cavity 112 , and an engagement surface 908 of the lid 116 , which is positioned above the seating surface 906 when the lid 116 is mounted to the cup 114 .
- the portion 902 of the water permeable enclosure comprises a flange 910 , which extends from the upper portion of the permeable enclosure 200 .
- the flange 910 is secured between the seating surface 906 and the engagement surface 908 , such that water entering the through-flow cartridge, for example through apertures 106 , is directed into the water permeable enclosure 200 . That is, the flange 910 is generally sandwiched between the seating surface 906 and the engagement surface 908 , such that the water is inhibited from bypassing the enclosure 200 , for example by passing over the top of the enclosure 200 and through an annular gap 912 defined between the cup 114 and the enclosure 200 .
- the enclosure 200 comprises a water impermeable longitudinally extending sidewall 218 , a water permeable top 220 , and a water permeable bottom 222 , as described hereinabove.
- the longitudinally extending sidewall 218 may be substantially solid and rigid, and the top 220 and the bottom 222 may comprise a mesh. Accordingly, water entering the cartridge passes through the water permeable top 220 and into the enclosure 200 , and as the sidewall 218 is water impermeable, the water is forced to pass through the filtration media in the enclosure 200 , in order to pass out of the water permeable bottom 222 .
- the flange 910 , seating surface 906 , and engagement surface 908 provide a water-tight or water-resistant seal; however, it will be appreciated that some water may pass through the joints between the flange 910 , seating surface 906 , and engagement surface 908 .
- the seating surface 906 is a single seating surface extending about the entire circumference of the cavity 112 .
- the seating surface 906 may comprise a plurality of seating surface portions, each extending about only a portion of the circumference of the cavity 112 .
- the engagement surface 908 comprises a portion of the bottom surface of the lid 116 that is continuous with and visually indistinguishable from the remainder of the lid 116 .
- the engagement surface 908 may be discontinuous with the remainder of the lid 116 and visually distinguishable therefrom.
- the engagement surface 908 may comprise a downwardly extending rib, which extends about the periphery of the bottom surface of the lid (not shown).
- the engagement surface 908 may comprise a plurality of engagement surface portions, each extending about only a portion of the periphery of the lid 116 .
- the enclosure 200 preferably further comprises a lip 914 extending downwardly from the outer periphery of the flange 910 .
- the cup 114 preferably comprises a recess 916 extending around the seating surface 906 .
- the lip 914 is configured to be received in the recess 916 , to aid in securing the flange 910 between the seating surface 906 and the engagement surface 908 .
- the portion 902 of the enclosure 200 may engage the portion 904 of the cartridge 102 in another manner.
- an inner wall of the cup may comprise a recess or notch extending about the circumference thereof, and an outer wall of the enclosure may comprise a rib or lip that is receivable in recess (not shown).
- a gasket or other sealing member may be provided between the portion 902 of the enclosure and the portion of the cartridge 904 . In such embodiments, the portions 902 , 904 may be indirectly engaged, via the sealing member.
- the lid 116 is preferably removably secured to the cup 114 . That is, the lid 116 and the cup 114 comprise mating screw threads, 118 , 120 , as described hereinabove. Accordingly, the lid 116 may be unscrewed from the cup 114 to access the cavity 112 , for example in order to replace the enclosure 200 , as described hereinabove. Further, when an enclosure 200 is placed in the cup 114 , and the lid 116 is screwed onto the cup 114 , the flange 910 is secured between the seating surface 906 and the engagement surface 908 .
- the lid 116 may be permanently or semi-permanently secured to the cup 114 .
- the cup 114 and the lid 116 may be secured together such that an end user may not access the cavity 112 .
- filter assembly 100 may be removably receivable in a household water filtration apparatus.
- filter assembly 100 may be removed from a household water filtration apparatus by sliding cartridge 102 from a filter assembly holder, such as filter assembly holder 24 .
- filter assembly 100 may be removably receivable in household water filtration apparatus in another suitable manner.
- filter assembly 100 is positioned in the fluid flow path to the filtered water reservoir 14 . Preferably, it is positioned between a feed water reservoir 22 and a filtered water reservoir 14 .
- filter assembly 100 may be permanently secured to container 12 .
- the term ‘permanently secured’ indicates that during normal use, a user may not remove the portion of filter assembly 100 from container 12 .
- filter assembly holder 24 may not be required. As shown in FIGS. 7 and 8 , this may be accomplished by permanently securing at least a portion of cartridge 102 to household water filtration apparatus 10 .
- cup 114 may be integrally formed with a part household water filtration apparatus 10 , or may subsequently be secured thereto by mechanical attachment members such as a screw thread, a latch or the like, or by an adhesive or welding or the like.
- lid 116 is movable from the top of cup 114 while cup 114 is in position in water filtration apparatus 10 , such that permeable enclosure 200 may be removed from cartridge 102 , as shown in FIG. 8 .
- Lid 116 may be removably mounted thereto or moveably mounted thereto by any method disclosed herein. If the water filtration apparatus has a feed water reservoir 22 with a lid 30 , then it will be appreciated that lid 116 may be removed after lid 30 of feed water reservoir 22 is opened. Alternately, lid 116 may be openable when lid 30 is opened, such as if an arm extends from lid 30 to lid 116 . In such a case, lid 116 may be secured in position by such an arm and/or a snap fit.
- the container housing the filtration media may be fabricated from polylactic acid. That is, in the embodiments shown, wherein an enclosure 200 houses the filtration media, it is preferable that the enclosure 200 is fabricated from polylactic acid.
- the enclosure 200 comprises a water impermeable longitudinally extending sidewall 218 , and a water permeable top 220 and bottom wall 222
- at least one of the sidewall 218 , top wall 220 , and bottom 222 wall may be fabricated from polylactic acid.
- the sidewall may be made from a solid sheet of polylactic acid
- the top wall and bottom wall may be made from a polylactic acid mesh.
- the container may be cartridge 102 or enclosure 200 .
- Embodiments wherein the enclosure 200 is fabricated from polylactic acid may be particularly advantageous when the cartridge 102 is configured to be openable, as described hereinabove.
- the cartridge 102 when the filtration media is spent, the cartridge 102 may be opened, and the enclosure 200 may be removed from the cartridge 102 .
- the enclosure 200 may then be discarded with “green waste”, for example it may be sent to a compost site, such that it may biodegrade.
- the filter cartridge 102 may not be openable. That is, the enclosure 200 may be sealed inside the filter cartridge 102 .
- the filter cartridge 102 may also be fabricated from polylactic acid. Accordingly, when the filtration media is spent, the entire filter assembly 100 may be discarded with “green waste”, such that it may biodegrade.
- the filter cartridge 102 itself may be the container for the filtration media, and may be fabricated from polylactic acid. That is, the filter cartridge 102 may directly house the filtration media, and an enclosure 200 may not be provided. Accordingly, when the filtration media is spent, the entire filter cartridge 102 may be discarded with “green waste”, such that it may biodegrade.
- the filter media is in contact with the portion of the container made from polylactic acid.
- a method of filtering water using a portable water filter apparatus will now be described. The method may be carried out using filter assembly 100 , as exemplified in FIGS. 2-6 , or may be carried out with another filter assembly as described herein.
- a user may obtain a flow-through cartridge, for example cartridge 102 described hereinabove.
- the through flow cartridge may be permanently secured to the portable water filtration apparatus, or may be removably received therein.
- the user may then open the cartridge, if it is not acquired in an open condition, for example by unscrewing a lid.
- a filter member for example a filter packet comprising enclosure 200 housing filtration media, may then be placed inside the cartridge. When the filter member has been placed inside the cartridge, the user may then close the cartridge.
- the user may wish to ensure that the filter member is retained in a position that is spaced apart from any apertures in either or both of the top and bottom portions of the cartridge.
- the user may place one or more support structures in the cartridge prior to and/or after placing the filter member in the cartridge.
- the cartridge may be formed with integral support structures, and thus the user may not need to position any support structures.
- the cartridge may be structured such that the cavity may be accessed without a step of opening or closing.
- the cartridge may comprise a slot or opening that remains open.
- the user may insert the enclosure into the cartridge, without opening or closing the cartridge.
- the cartridge may be deposited into a portable water filtration apparatus either before or after the filter member has been placed in the cartridge.
- the cartridge may be permanently secured in the water filtration apparatus and the filter member replaced while the cartridge is in position.
- Such an apparatus may be a jug or other container, for example, having a funnel or holder 24 in which the cartridge is to be placed (see for example FIG. 1 ), or having the cartridge permanently secured thereto.
- such an apparatus may be a fitting for a water faucet, having an encasement in which the cartridge will be housed.
- the portable water filtration apparatus may be another type of household or countertop water filtration apparatus.
- water may be passed through the cartridge, preferably by gravity feed. This may be done, for example, by pouring water over the cartridge (e.g., filling a feed water reservoir above the cartridge), or by turning on a faucet if the cartridge is provided in the flow line.
- the filtration media may become spent. For example, with typical household use, the filtration media may become spent after a period of about 2-4 months.
- the user may replace the filter member with another filter member.
- the user may optionally remove the cartridge from the household water filtration apparatus, open the cartridge, remove the filter member (enclosure 200 ), deposit another filter member into the cartridge, close the cartridge, and optionally return the cartridge to the water filtration apparatus.
- the user may open the cartridge while the cartridge is in position in the water filtration apparatus and then replace the filter member.
- embodiments of the present invention provide a water filter assembly and a method for filtering water that allows for cost effective, and less wasteful replacement of spent filtration media.
- Embodiments of the present invention may be advantageous because as the filtration media becomes spent, the permeable enclosure may be removed from the cartridge and replaced, without requiring the replacement of the entire cartridge.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Description
-
- (a) a through-flow cartridge having an accessible cavity, wherein the cartridge is received in the household water filtration apparatus;
- (b) a water-permeable enclosure removably receivable in the accessible cavity; and,
- (c) the permeable enclosure housing filtration media.
-
- (a) opening a through-flow cartridge;
- (b) depositing a filter packet in the cartridge;
- (c) closing the cartridge;
- (d) depositing the cartridge in the household water filtration apparatus; and,
- (e) passing water through the cartridge.
-
- (a) a through-flow cartridge defining a cavity
- (b) a water-permeable enclosure receivable in the cavity and housing filtration media; and,
- (c) the water-permeable enclosure and the through-flow cartridge are configured to direct water into the water-permeable enclosure.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/240,970 US8216465B2 (en) | 2007-08-29 | 2011-09-22 | Filter assembly |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US789907P | 2007-08-29 | 2007-08-29 | |
US11/960,018 US20090057241A1 (en) | 2007-08-29 | 2007-12-19 | Filter assembly |
US12/194,036 US8043502B2 (en) | 2007-08-29 | 2008-08-19 | Water pitcher filter |
US13/240,970 US8216465B2 (en) | 2007-08-29 | 2011-09-22 | Filter assembly |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/194,036 Division US8043502B2 (en) | 2007-08-29 | 2008-08-19 | Water pitcher filter |
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Publication Number | Publication Date |
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US20120012515A1 US20120012515A1 (en) | 2012-01-19 |
US8216465B2 true US8216465B2 (en) | 2012-07-10 |
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US12/194,036 Active US8043502B2 (en) | 2007-08-29 | 2008-08-19 | Water pitcher filter |
US13/240,970 Active US8216465B2 (en) | 2007-08-29 | 2011-09-22 | Filter assembly |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US12/194,036 Active US8043502B2 (en) | 2007-08-29 | 2008-08-19 | Water pitcher filter |
Country Status (1)
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Citations (182)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US434570A (en) | 1890-08-19 | Filter | ||
US773946A (en) | 1904-01-11 | 1904-11-01 | John E Langill | Filter. |
US2630227A (en) | 1951-04-05 | 1953-03-03 | Edwin L Rodwell | Filter |
US3327859A (en) | 1963-12-30 | 1967-06-27 | Pall Corp | Portable unit for potable water |
US3339743A (en) | 1964-07-16 | 1967-09-05 | Morris A Bealle | Portable water purifier |
US3747767A (en) | 1970-05-13 | 1973-07-24 | Chemie Brita Geraete Ing Itter | Water treatment device |
US3823824A (en) | 1972-09-21 | 1974-07-16 | S Close | Portable drinking water purifier |
US4149454A (en) | 1978-03-30 | 1979-04-17 | General Electric Company | Coffeemaker basket and filter assembly |
US4151092A (en) | 1977-07-11 | 1979-04-24 | Teledyne Industries, Inc. | Portable water filter |
US4172796A (en) | 1975-09-29 | 1979-10-30 | Teledyne Industries, Inc. | Water purifier apparatus |
US4306971A (en) | 1979-05-17 | 1981-12-22 | Chemie Brita Gerate Ing. Karl Itter Nachfolger | Water purifying apparatus |
GB2119272A (en) | 1982-03-16 | 1983-11-16 | Dennis Bowes Verity | Filter |
US4505727A (en) | 1983-11-25 | 1985-03-19 | Multiform Desiccants, Inc. | Adsorbent cartridge |
US4528095A (en) | 1983-01-27 | 1985-07-09 | Byrne James J | Filtering system for potable water |
US4623457A (en) | 1984-04-13 | 1986-11-18 | Heinz Hankammer | Water purifier |
US4666600A (en) | 1984-03-17 | 1987-05-19 | Brita Wasserfilter Gmbh | Insert for a water purifier |
US4741828A (en) | 1985-06-27 | 1988-05-03 | Alhaeuser Erich | Filter cartridge for the improvement of the quality of drinking water |
US4749481A (en) | 1986-08-01 | 1988-06-07 | Wheatley Robert T | Disposable water purifier |
US4764274A (en) | 1985-11-19 | 1988-08-16 | Bernard Miller | Water filter unit and dispenser |
US4776956A (en) | 1988-03-24 | 1988-10-11 | Gannaway Richard M | Combination water filter and container apparatus |
US4828692A (en) | 1987-07-31 | 1989-05-09 | Purewater Sciences International, Inc. | Simplified method and apparatus for purification |
US4895648A (en) | 1988-04-30 | 1990-01-23 | Brita Wasser-Filter-Systeme Gmbh | Filter cover for a purification insert in a water treatment device with a hollow tube |
US4948499A (en) | 1987-07-31 | 1990-08-14 | Purewater Science International, Inc. | Simplified method and apparatus for purification |
US4969996A (en) | 1988-03-26 | 1990-11-13 | Brita Wasser-Filter-Systeme Gmbh | Water purification device with an intake funnel |
USD312863S (en) | 1988-03-26 | 1990-12-11 | Heinz Hankammer | Filter cartridge |
US4995975A (en) | 1988-12-09 | 1991-02-26 | Western Temco, Inc. | Unitary water cooler filter |
US5049272A (en) | 1988-10-28 | 1991-09-17 | Oxyphen Ag | Filter cartridge with vented cap |
US5076922A (en) | 1990-10-12 | 1991-12-31 | Wilton Industries, Inc. | Water-filtration apparatus |
USD325768S (en) | 1987-10-08 | 1992-04-28 | Brita Wasser-Filter-System AG | Watering can |
US5139666A (en) | 1991-01-04 | 1992-08-18 | Domotechnica Canada, Inc. | Bottle and filter |
USD332028S (en) | 1990-03-30 | 1992-12-29 | Associated Mills Inc. | Combined water pitcher and filter |
US5190643A (en) | 1992-01-10 | 1993-03-02 | Mr. Coffee, Inc. | Water treatment device having means to count times used and limit useage |
US5205932A (en) | 1991-08-22 | 1993-04-27 | Nu-Water Systems, Inc. | Point-of-use water purification appliance |
USD336760S (en) | 1990-03-24 | 1993-06-22 | Brita Wasser-Filter Systeme Gmbh | Combined water filter and container |
US5225078A (en) | 1992-03-04 | 1993-07-06 | Ametek, Inc. Plymouth Products Division | Pour-through pitcher filter |
USD337691S (en) | 1990-03-24 | 1993-07-27 | Brita Wasser-Filter-Systems Gmbh | Water filter with container |
US5238559A (en) | 1991-03-14 | 1993-08-24 | Heinrich Nieweg | Filter device |
USD352212S (en) | 1993-04-06 | 1994-11-08 | Burton Donna R | Grease container for reusable cooking oil |
US5431813A (en) | 1994-02-14 | 1995-07-11 | Daniels; Jack E. | Water filtering bottle |
US5486285A (en) | 1993-06-10 | 1996-01-23 | The Clorox Company | Air inlet valve for water cooler |
US5505120A (en) | 1994-12-12 | 1996-04-09 | Albertson; David V. | Water filter |
USD370711S (en) | 1995-03-31 | 1996-06-11 | Matscorp Ltd. | Water filter cartridge |
US5536396A (en) | 1995-07-24 | 1996-07-16 | Valuedirect Filtration Systems, Inc. | Water filtration kit |
US5536394A (en) | 1994-11-17 | 1996-07-16 | Recovery Engineering, Inc. | End of life mechanism for water treatment cartridge |
USD374911S (en) | 1995-09-15 | 1996-10-22 | Dov Kahana | Filter housing |
US5616243A (en) | 1994-06-17 | 1997-04-01 | Levy; Ehud | Filter for inverted bottle type water dispenser |
US5628897A (en) | 1995-07-21 | 1997-05-13 | Phelan; John J. | Heated filter chamber with supporting collection chamber |
US5637214A (en) | 1995-11-09 | 1997-06-10 | Kahana; Dov | Filter assembly for water treatment apparatus |
US5652008A (en) | 1993-05-26 | 1997-07-29 | Ultrapure Systems, Inc. | Universal water filtration device and method of filtering water |
US5665224A (en) | 1992-08-14 | 1997-09-09 | William Levine Limited | Filter jug |
USD386041S (en) | 1996-04-30 | 1997-11-11 | Recovery Engineering, Inc. | Water purification pitcher |
US5698097A (en) | 1991-03-28 | 1997-12-16 | Knecht Filterwerke Gmbh | Oil filter including replaceable primary and secondary flow filter elements |
USD388655S (en) | 1995-12-11 | 1998-01-06 | Flom Jay L | Water pitcher |
US5811004A (en) | 1996-04-30 | 1998-09-22 | Syratech Corporation | Water filtration cartridge |
US5830360A (en) | 1996-05-02 | 1998-11-03 | Btl Int Llc | Pour through and pitcher mounted water filter for removal of parasite cysts, bacteria and viruses and method of filtrating water |
USD400392S (en) | 1997-03-11 | 1998-11-03 | Syratech Corporation | Pitcher |
US5840185A (en) | 1996-07-23 | 1998-11-24 | Douglass E. Hughes | Sports bottle filter cartridge |
US5846418A (en) | 1995-12-06 | 1998-12-08 | Teledyne Industries, Inc. | Point-of-use water treatment system |
US5855160A (en) | 1996-08-29 | 1999-01-05 | Shen; Shun-Tsung | Tea maker |
USD406003S (en) | 1997-11-10 | 1999-02-23 | Recovery Engineering, Inc. | Water purification pitcher |
US5873995A (en) | 1997-05-06 | 1999-02-23 | The Clorox Company | End-of-life indicator for water treatment device |
US5882507A (en) | 1996-04-30 | 1999-03-16 | Recovery Engineering, Inc. | Water filter cartridge end-of-life mechanism |
US5900138A (en) | 1994-10-28 | 1999-05-04 | Laica S.R.L | Vessel for filtering liquids, particularly drinking water having device for counting occasions of vessel access |
US5914045A (en) | 1995-12-26 | 1999-06-22 | Palmer; Carl W | Portable water filtration system and method |
DE19806924A1 (en) | 1998-02-19 | 1999-08-26 | Wts Kereskedelmi Es Szolgaltat | Swimming pool water filter |
US5980743A (en) | 1996-08-06 | 1999-11-09 | Brita Wasser-Filter-Systeme Gmbh | Filter means with fabric insert |
US5989424A (en) | 1995-04-07 | 1999-11-23 | Matscorp Ltd. | Water filtration cartridge |
US6012232A (en) | 1998-03-28 | 2000-01-11 | Brita Wasser-Filter-Systeme Gmbh | Through-flow cup which can be filled with granule material |
US6042725A (en) | 1998-04-20 | 2000-03-28 | Matscorp Ltd. | Water filter cartridge |
US6053482A (en) | 1997-01-31 | 2000-04-25 | Holmes Products Corp. | Humidifier including a water filtration device |
US6074550A (en) | 1997-07-19 | 2000-06-13 | Brita Wasser-Filger-Systeme Gmbh | Device for indicating the depletion of purifying agent |
US6099728A (en) | 1996-08-13 | 2000-08-08 | Brita Wasser-Filter-Systeme Gmbh | Filter cartridge with a sieve in an outlet aperture |
US6103114A (en) | 1998-01-09 | 2000-08-15 | Recovery Engineering, Inc. | Pour-through water treatment carafe |
US6193894B1 (en) | 1999-06-23 | 2001-02-27 | Brad C. Hollander | Methods and apparatus for disinfecting and sterilizing water in water dispensers using ultraviolet radiation |
US6202541B1 (en) | 1998-04-17 | 2001-03-20 | Houseware Technology Group | Apparatus for making purified water and related drinks |
USD440110S1 (en) | 2000-03-29 | 2001-04-10 | Recovery Engineering, Inc. | Water purification pitcher |
US6224751B1 (en) | 1998-04-29 | 2001-05-01 | Brita Gmbh | Water purifying device with means for indicating exhaustion of the purifying medium |
US6227382B1 (en) | 1997-12-19 | 2001-05-08 | Corning Incorporated | Water filtration apparatus |
US6238552B1 (en) | 1998-09-04 | 2001-05-29 | Roy T. Shannon | Universal insert for a water purifier |
EP1106225A1 (en) | 1999-12-06 | 2001-06-13 | Brita GmbH | Pressure filter for water |
US6254768B1 (en) | 1998-07-21 | 2001-07-03 | Corning Incorporated | Water filter carafe |
US20010006162A1 (en) | 1999-06-23 | 2001-07-05 | Brad Hollander | Methods and apparatus for disinfecting and sterilizing water in water dispensers using ultraviolet radiation |
US6270822B1 (en) | 1997-10-27 | 2001-08-07 | Tekquest Industries | Methods for removal of chlorine from water |
US6287456B1 (en) | 1998-10-30 | 2001-09-11 | Kimberly-Clark Worldwide, Inc. | Filtration system with filtrate volume indicator |
US6290848B1 (en) | 1997-04-16 | 2001-09-18 | Pur Water Purification Products, Inc. | Filter cartridge for gravity-fed water treatment devices |
US20010032822A1 (en) | 2000-01-15 | 2001-10-25 | Kx Industries, L.P. | Device, method, and system for removing contaminants from a liquid |
US20020020189A1 (en) | 2000-05-17 | 2002-02-21 | Isamu Namose | Temperature adjustment apparatus |
US20020020673A1 (en) | 1999-02-19 | 2002-02-21 | Innova Pure Water Inc. | Static filter pitcher |
USD454469S1 (en) | 2001-10-05 | 2002-03-19 | Dart Industries Inc. | Pitcher with capped spout |
US6387260B1 (en) | 1997-08-21 | 2002-05-14 | Electrophor, Inc. | Filtration device for liquid purification |
US20020060189A1 (en) | 2000-11-22 | 2002-05-23 | Wayne Conrad | Method and apparatus for controlling a household water purifier |
US20020060175A1 (en) | 2000-11-22 | 2002-05-23 | Wayne Conrad | Sensor for a water treatment apparatus |
US20020060176A1 (en) | 2000-10-11 | 2002-05-23 | Mierau Bradley D. | Static filtration media vessels |
US20020060190A1 (en) | 2000-11-22 | 2002-05-23 | Wayne Conrad | Method and apparatus for monitoring an ozone generator in a household water purifier |
US20020060177A1 (en) | 2000-11-22 | 2002-05-23 | Wayne Conrad | Filter assembly for a household water purifier |
US20020066698A1 (en) | 2000-12-04 | 2002-06-06 | Brunner Michael Scott | Water filtration system and vessel |
US6405875B1 (en) | 1998-12-18 | 2002-06-18 | Corning Incorporated | Water filtration device and method |
USD459941S1 (en) | 2001-08-17 | 2002-07-09 | D. Scott Miller | Filter lid for pitcher |
US6428687B1 (en) | 1998-02-16 | 2002-08-06 | Laica S.R.L. | Filter cartridge, particularly for jug water purifiers |
US6440302B1 (en) | 2000-11-14 | 2002-08-27 | Herb Leipziger | Portable water purifier |
US20020125187A1 (en) | 1998-01-09 | 2002-09-12 | Recovery Engineering, Inc. | Pour-through water treatment dispenser |
US6454941B1 (en) | 1998-12-17 | 2002-09-24 | Corning Incorporated | Gravity-flow water filtration device |
US20020139746A1 (en) | 1998-08-27 | 2002-10-03 | Evan E. Koslow | Composite filter medium and fluid filters containing same |
US6478956B2 (en) | 2001-02-27 | 2002-11-12 | Kamaljit S. Kaura | Manually pressurized water filtering container |
US6485644B2 (en) | 1998-06-09 | 2002-11-26 | Henry Alan Bowler | Liquid dispenser with closed gravity filter and air breathing system |
US20030034291A1 (en) | 2001-08-17 | 2003-02-20 | Miller D. Scott | Filter pitcher with ice hopper |
US6524477B1 (en) | 1997-08-27 | 2003-02-25 | Rich Buhler | Gravity-flow filtration cartridge for the removal of microorganisms and/or other contaminants |
US20030070979A1 (en) | 2001-10-15 | 2003-04-17 | I-Chung Huang | Percolating steeper |
US20030085169A1 (en) | 2001-10-24 | 2003-05-08 | Reid Roger P | Filter cartridge with divided filter bed for gravity-flow use |
US6565743B1 (en) | 1999-08-31 | 2003-05-20 | Kimberly-Clark Worldwide, Inc. | Portable purification container with cumulative use indicator |
US6572769B2 (en) | 1994-09-26 | 2003-06-03 | Rajan G. Rajan | Water treatment apparatus |
US20030159979A1 (en) | 2002-02-26 | 2003-08-28 | Chau Yiu Chau | Reservoir water treatment |
US20030168401A1 (en) | 2002-01-31 | 2003-09-11 | Koslow Evan E. | Microporous filter media, filtration systems containing same, and methods of making and using |
US6638426B1 (en) | 2000-07-07 | 2003-10-28 | The Clorox Company | Water purifying apparatus |
US20040060873A1 (en) | 2000-12-25 | 2004-04-01 | Manabu Yanou | Pitcher type water purifier and purification cartridge for the water purifier |
US20040149643A1 (en) | 2002-12-05 | 2004-08-05 | Vandenbelt Rudy A. | Portable, refillable water dispenser serving batches of water purified of organic and inorganic pollutants |
US20040149642A1 (en) | 2002-12-05 | 2004-08-05 | Vandenbelt Rudy A. | Filter cartridge for a standlone point of use water purification device |
US6773608B1 (en) | 1998-05-13 | 2004-08-10 | Uv Pure Technologies Inc. | Ultraviolet treatment for aqueous liquids |
US6841067B1 (en) | 1999-11-02 | 2005-01-11 | Brita Gmbh | Filtration device for liquids |
USD501755S1 (en) | 2003-01-08 | 2005-02-15 | Brita Gmbh | Date memorizer for filter or filter lid |
US20050109683A1 (en) | 2003-11-26 | 2005-05-26 | Joyce Patrick C. | Water contaminant indicators |
US20050133427A1 (en) | 2003-12-18 | 2005-06-23 | Rinker Edward B. | Filtered water enhancements |
US20050139540A1 (en) | 2000-10-11 | 2005-06-30 | Innova Pure Water Inc. | Static filtration media vessels |
US20050224422A1 (en) | 2004-04-08 | 2005-10-13 | Maurizio Moretto | Method of determination of the conditions of exhaustion of a filtering cartridge for filtering carafes with replaceable cartridge and carafe operating in compliance with such method |
US20050247609A1 (en) | 2004-04-15 | 2005-11-10 | Laing G B | Fluid treatment system |
US20050252844A1 (en) | 2004-05-14 | 2005-11-17 | Chau Yiu C | Water treatment unit for bottle or pitcher |
US20060000763A1 (en) | 2004-06-30 | 2006-01-05 | Rinker Edward B | Gravity flow carbon block filter |
US7014759B2 (en) | 2000-02-18 | 2006-03-21 | Radford Thomas K | Method and apparatus for water purification |
US20060096925A1 (en) | 2003-02-13 | 2006-05-11 | Ehud Roffman | Water conversion device and method |
USD523280S1 (en) | 2004-05-28 | 2006-06-20 | Progressive International Corporation | Pitcher |
US7081225B1 (en) | 1999-07-20 | 2006-07-25 | Hollander Brad C | Methods and apparatus for disinfecting and sterilizing fluid using ultraviolet radiation |
US20060163169A1 (en) | 2004-12-13 | 2006-07-27 | Eckhardt Richard A | Methods and apparatus for the treatment of fluids |
US20060162806A1 (en) | 2005-01-21 | 2006-07-27 | Hengsperger Steve L | Drinking water pitcher having a removable upper reservoir |
US20060163148A1 (en) | 2005-01-21 | 2006-07-27 | Hengsperger Steve L | Filter housing for a drinking water pitcher |
US20060163174A1 (en) | 2003-06-26 | 2006-07-27 | Namespetra Justin L | System and containers for water filtration and item sanitization |
US20060191824A1 (en) | 2004-05-24 | 2006-08-31 | Arett Richard A | Fluid container having an additive dispensing system |
US7107838B2 (en) | 2004-04-19 | 2006-09-19 | Fook Tin Technologies Ltd. | Apparatus and methods for monitoring water consumption and filter usage |
US20060226064A1 (en) | 2005-03-23 | 2006-10-12 | Beckman Robert C | Multiple cartridge carafe filtration |
US20060231476A1 (en) | 2003-12-03 | 2006-10-19 | Headwaters R & D, Inc. | Portable, refillable water dispenser serving batches of water purified of organic and inorganic pollutants |
US20060249442A1 (en) | 2005-04-01 | 2006-11-09 | Yap Walter N | Water filtration system with improved performance |
US20070045169A1 (en) | 2005-08-23 | 2007-03-01 | Powell James D | Portable filtered drinking water system |
US7201840B2 (en) | 2001-08-17 | 2007-04-10 | Dart Industries Inc. | Fluid treatment device and counter mechanism |
US20070108136A1 (en) | 2005-11-15 | 2007-05-17 | Gold Steven K | Fluid filtration assembly |
US20070125713A1 (en) | 2005-12-07 | 2007-06-07 | Harris James M | Water purifier with UV and adsorbent |
JP2007197857A (en) | 2006-01-25 | 2007-08-09 | Kuraray Co Ltd | Nonwoven fabric composed of fiber made of polylactic acid composition |
US20070209984A1 (en) | 2006-03-09 | 2007-09-13 | Fka Distributing Co. D/B/A Homedics, Inc. | Water Purifier |
US20070215536A1 (en) | 2006-03-20 | 2007-09-20 | Filtrex Holdings, Pte Ltd | Filter cartridge for gravity-fed water treatment device |
US20070221561A1 (en) | 2006-03-22 | 2007-09-27 | 3M Innovative Properties Company | Liquid filtration systems |
US7297283B2 (en) | 2005-12-09 | 2007-11-20 | Yakima Filters, Inc. | Container having fluid purification system |
US20070278141A1 (en) | 2006-05-15 | 2007-12-06 | Ginger Patera | Water filter and dispenser system |
US20080023402A1 (en) | 2006-07-28 | 2008-01-31 | General Electric Company | Water filtration systems and methods |
US20080023406A1 (en) | 2006-07-28 | 2008-01-31 | General Electric Company | Water filtration systems and methods |
US20080023405A1 (en) | 2006-07-28 | 2008-01-31 | General Electric Company | Water filtration systems and methods |
US20080035552A1 (en) | 2006-05-18 | 2008-02-14 | Hsiung-Che Lee | Multi-function and multi-layer filtration device |
US20080087596A1 (en) | 2006-10-13 | 2008-04-17 | Filtrex Holdings Pte Ltd. | Universal water purifier unit assembly device |
US20080110820A1 (en) | 2004-06-30 | 2008-05-15 | Elizabeth Louise Knipmeyer | Gravity Flow Carbon Block Filter |
US20080116146A1 (en) | 2006-11-17 | 2008-05-22 | Miox Corproation | Water purification system |
US20080190825A1 (en) | 2005-03-18 | 2008-08-14 | Tersano Inc. | Water Sanitazation System Having Safety Features and Removable Filter |
US20080202992A1 (en) | 2007-02-26 | 2008-08-28 | Halosource, Inc. | Purifier insert with a tablet dispenser and indicator |
US20080223797A1 (en) | 2006-09-20 | 2008-09-18 | Omnipure Filter Company, Inc. | Filters with improved media utilization and methods of making and using same |
US20080257802A1 (en) | 2007-04-18 | 2008-10-23 | Friel Daniel D | Advanced household water purification means |
USD579515S1 (en) | 2008-01-15 | 2008-10-28 | The Clorox Company | Water filter |
US20090001011A1 (en) | 2004-06-30 | 2009-01-01 | Knipmeyer Elizabeth L | Gravity flow filter |
US20090039032A1 (en) | 2007-08-07 | 2009-02-12 | Whirlpool Corporation | Portable filtration and ozonation apparatus |
US20090039028A1 (en) | 2007-08-07 | 2009-02-12 | Eaton Bradley W | Liquid filtration systems |
US20090057220A1 (en) * | 2007-08-29 | 2009-03-05 | Uv Corporation | Filter assembly |
US20090057241A1 (en) * | 2007-08-29 | 2009-03-05 | Phillip Nauta | Filter assembly |
US7510088B2 (en) | 2006-07-13 | 2009-03-31 | Conair Corporation | Liquid filter cartridge |
US20090202691A1 (en) | 2008-02-11 | 2009-08-13 | Derek Gauger | Coffee making apparatus and method |
US20090314703A1 (en) | 2008-06-20 | 2009-12-24 | Beach Kelsey E | System and Method for Demonstrating Water Filtration and Purification Techniques |
US20100006508A1 (en) | 2008-07-09 | 2010-01-14 | The Procter & Gamble Company | Multi-Stage Water Filters |
US20100044291A1 (en) | 2008-08-20 | 2010-02-25 | Chung-Yen Tseng | Pitcher with a water purification module |
US20100068343A1 (en) | 2006-12-01 | 2010-03-18 | Johann Juergen | Process and device for enriching water with magnesium ions |
US7713482B2 (en) | 2003-12-18 | 2010-05-11 | The Clorox Company | Control scheme for enhanced filtered water systems |
US20100243582A1 (en) | 2009-03-27 | 2010-09-30 | Pur Water Purification Products, Inc. | Droplet Forming Fluid Treatment Devices and Methods of Forming Filtered Droplets in a Fluid Treatment Device |
US7850859B2 (en) | 2001-08-23 | 2010-12-14 | The Procter & Gamble Company | Water treating methods |
US20110000841A1 (en) | 2008-05-29 | 2011-01-06 | Gleb Dmitrievich Rusinov | Filter Cartridge and Method For Producing and Using Thereof |
US7883623B2 (en) | 2002-12-10 | 2011-02-08 | King Technology | Dispensing system |
US7906019B2 (en) | 2004-12-03 | 2011-03-15 | David J. Elliott | Bacteria deactivation apparatus |
US20110073551A1 (en) | 2006-09-20 | 2011-03-31 | Omnipure Filter Company, Inc. | Filter modules for improved media utilization and use in generally cylindrical housing |
US20110084006A1 (en) | 2009-02-25 | 2011-04-14 | Ka Shing Wu | Uv liquid storage and dispensing device |
US8128820B2 (en) * | 2009-02-25 | 2012-03-06 | Mr. Chiaphua Industries Limited | UV liquid storage and dispensing device |
-
2008
- 2008-08-19 US US12/194,036 patent/US8043502B2/en active Active
-
2011
- 2011-09-22 US US13/240,970 patent/US8216465B2/en active Active
Patent Citations (244)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US434570A (en) | 1890-08-19 | Filter | ||
US773946A (en) | 1904-01-11 | 1904-11-01 | John E Langill | Filter. |
US2630227A (en) | 1951-04-05 | 1953-03-03 | Edwin L Rodwell | Filter |
US3327859A (en) | 1963-12-30 | 1967-06-27 | Pall Corp | Portable unit for potable water |
US3339743A (en) | 1964-07-16 | 1967-09-05 | Morris A Bealle | Portable water purifier |
US3747767A (en) | 1970-05-13 | 1973-07-24 | Chemie Brita Geraete Ing Itter | Water treatment device |
US3823824A (en) | 1972-09-21 | 1974-07-16 | S Close | Portable drinking water purifier |
US4172796A (en) | 1975-09-29 | 1979-10-30 | Teledyne Industries, Inc. | Water purifier apparatus |
US4151092A (en) | 1977-07-11 | 1979-04-24 | Teledyne Industries, Inc. | Portable water filter |
US4149454A (en) | 1978-03-30 | 1979-04-17 | General Electric Company | Coffeemaker basket and filter assembly |
US4306971A (en) | 1979-05-17 | 1981-12-22 | Chemie Brita Gerate Ing. Karl Itter Nachfolger | Water purifying apparatus |
GB2119272A (en) | 1982-03-16 | 1983-11-16 | Dennis Bowes Verity | Filter |
US4528095A (en) | 1983-01-27 | 1985-07-09 | Byrne James J | Filtering system for potable water |
US4505727A (en) | 1983-11-25 | 1985-03-19 | Multiform Desiccants, Inc. | Adsorbent cartridge |
US4666600A (en) | 1984-03-17 | 1987-05-19 | Brita Wasserfilter Gmbh | Insert for a water purifier |
US4623457A (en) | 1984-04-13 | 1986-11-18 | Heinz Hankammer | Water purifier |
US4741828A (en) | 1985-06-27 | 1988-05-03 | Alhaeuser Erich | Filter cartridge for the improvement of the quality of drinking water |
US4764274A (en) | 1985-11-19 | 1988-08-16 | Bernard Miller | Water filter unit and dispenser |
US4749481A (en) | 1986-08-01 | 1988-06-07 | Wheatley Robert T | Disposable water purifier |
US4828692A (en) | 1987-07-31 | 1989-05-09 | Purewater Sciences International, Inc. | Simplified method and apparatus for purification |
US4948499A (en) | 1987-07-31 | 1990-08-14 | Purewater Science International, Inc. | Simplified method and apparatus for purification |
USD325768S (en) | 1987-10-08 | 1992-04-28 | Brita Wasser-Filter-System AG | Watering can |
US4776956A (en) | 1988-03-24 | 1988-10-11 | Gannaway Richard M | Combination water filter and container apparatus |
USD312863S (en) | 1988-03-26 | 1990-12-11 | Heinz Hankammer | Filter cartridge |
US4969996A (en) | 1988-03-26 | 1990-11-13 | Brita Wasser-Filter-Systeme Gmbh | Water purification device with an intake funnel |
US4895648A (en) | 1988-04-30 | 1990-01-23 | Brita Wasser-Filter-Systeme Gmbh | Filter cover for a purification insert in a water treatment device with a hollow tube |
US5049272A (en) | 1988-10-28 | 1991-09-17 | Oxyphen Ag | Filter cartridge with vented cap |
US4995975A (en) | 1988-12-09 | 1991-02-26 | Western Temco, Inc. | Unitary water cooler filter |
USD336760S (en) | 1990-03-24 | 1993-06-22 | Brita Wasser-Filter Systeme Gmbh | Combined water filter and container |
USD337691S (en) | 1990-03-24 | 1993-07-27 | Brita Wasser-Filter-Systems Gmbh | Water filter with container |
USD332028S (en) | 1990-03-30 | 1992-12-29 | Associated Mills Inc. | Combined water pitcher and filter |
US5076922A (en) | 1990-10-12 | 1991-12-31 | Wilton Industries, Inc. | Water-filtration apparatus |
US5139666A (en) | 1991-01-04 | 1992-08-18 | Domotechnica Canada, Inc. | Bottle and filter |
US5238559A (en) | 1991-03-14 | 1993-08-24 | Heinrich Nieweg | Filter device |
US5698097A (en) | 1991-03-28 | 1997-12-16 | Knecht Filterwerke Gmbh | Oil filter including replaceable primary and secondary flow filter elements |
US5205932A (en) | 1991-08-22 | 1993-04-27 | Nu-Water Systems, Inc. | Point-of-use water purification appliance |
US5190643A (en) | 1992-01-10 | 1993-03-02 | Mr. Coffee, Inc. | Water treatment device having means to count times used and limit useage |
US5225078A (en) | 1992-03-04 | 1993-07-06 | Ametek, Inc. Plymouth Products Division | Pour-through pitcher filter |
US5665224A (en) | 1992-08-14 | 1997-09-09 | William Levine Limited | Filter jug |
USD352212S (en) | 1993-04-06 | 1994-11-08 | Burton Donna R | Grease container for reusable cooking oil |
US5652008A (en) | 1993-05-26 | 1997-07-29 | Ultrapure Systems, Inc. | Universal water filtration device and method of filtering water |
US5486285A (en) | 1993-06-10 | 1996-01-23 | The Clorox Company | Air inlet valve for water cooler |
US5431813A (en) | 1994-02-14 | 1995-07-11 | Daniels; Jack E. | Water filtering bottle |
US5616243A (en) | 1994-06-17 | 1997-04-01 | Levy; Ehud | Filter for inverted bottle type water dispenser |
US20080302714A1 (en) | 1994-09-26 | 2008-12-11 | Zero Technologies, Inc. | Water treatment apparatus |
US20080041790A1 (en) | 1994-09-26 | 2008-02-21 | Rajan Rajan G | Water treatment apparatus |
US7276161B2 (en) | 1994-09-26 | 2007-10-02 | Zero Technologies, Inc. | Water treatment apparatus |
US20040094465A1 (en) | 1994-09-26 | 2004-05-20 | Rajan Rajan G. | Water treatment apparatus |
US6572769B2 (en) | 1994-09-26 | 2003-06-03 | Rajan G. Rajan | Water treatment apparatus |
US5900138A (en) | 1994-10-28 | 1999-05-04 | Laica S.R.L | Vessel for filtering liquids, particularly drinking water having device for counting occasions of vessel access |
US5536394A (en) | 1994-11-17 | 1996-07-16 | Recovery Engineering, Inc. | End of life mechanism for water treatment cartridge |
US5785844A (en) | 1994-11-17 | 1998-07-28 | Recovery Engineering, Inc. | End of life mechanism for water treatment cartridge |
US5505120A (en) | 1994-12-12 | 1996-04-09 | Albertson; David V. | Water filter |
USD370711S (en) | 1995-03-31 | 1996-06-11 | Matscorp Ltd. | Water filter cartridge |
US5989424A (en) | 1995-04-07 | 1999-11-23 | Matscorp Ltd. | Water filtration cartridge |
US5628897A (en) | 1995-07-21 | 1997-05-13 | Phelan; John J. | Heated filter chamber with supporting collection chamber |
US5536396A (en) | 1995-07-24 | 1996-07-16 | Valuedirect Filtration Systems, Inc. | Water filtration kit |
USD374911S (en) | 1995-09-15 | 1996-10-22 | Dov Kahana | Filter housing |
US5637214A (en) | 1995-11-09 | 1997-06-10 | Kahana; Dov | Filter assembly for water treatment apparatus |
US5846418A (en) | 1995-12-06 | 1998-12-08 | Teledyne Industries, Inc. | Point-of-use water treatment system |
USD388655S (en) | 1995-12-11 | 1998-01-06 | Flom Jay L | Water pitcher |
US5914045A (en) | 1995-12-26 | 1999-06-22 | Palmer; Carl W | Portable water filtration system and method |
US5882507A (en) | 1996-04-30 | 1999-03-16 | Recovery Engineering, Inc. | Water filter cartridge end-of-life mechanism |
US20020134715A1 (en) | 1996-04-30 | 2002-09-26 | Pur Water Purification Products, Inc. | Filter cartridge assembly for water treatment device |
US20040173507A1 (en) | 1996-04-30 | 2004-09-09 | Pur Water Purification Products, Inc. | Water treatment device with fill-counting cartridge |
US6881327B2 (en) | 1996-04-30 | 2005-04-19 | Pur Water Purification Products | Water treatment device with fill-counting cartridge |
USD386041S (en) | 1996-04-30 | 1997-11-11 | Recovery Engineering, Inc. | Water purification pitcher |
US5811004A (en) | 1996-04-30 | 1998-09-22 | Syratech Corporation | Water filtration cartridge |
US6423224B1 (en) | 1996-04-30 | 2002-07-23 | The Procter & Gamble Company | Filter cartridge assembly for water treatment device |
US6649045B2 (en) | 1996-04-30 | 2003-11-18 | Pur Water Purification Products, Inc. | Filter cartridge assembly for water treatment device |
US5830360A (en) | 1996-05-02 | 1998-11-03 | Btl Int Llc | Pour through and pitcher mounted water filter for removal of parasite cysts, bacteria and viruses and method of filtrating water |
US5840185A (en) | 1996-07-23 | 1998-11-24 | Douglass E. Hughes | Sports bottle filter cartridge |
US5980743A (en) | 1996-08-06 | 1999-11-09 | Brita Wasser-Filter-Systeme Gmbh | Filter means with fabric insert |
US6099728A (en) | 1996-08-13 | 2000-08-08 | Brita Wasser-Filter-Systeme Gmbh | Filter cartridge with a sieve in an outlet aperture |
US5855160A (en) | 1996-08-29 | 1999-01-05 | Shen; Shun-Tsung | Tea maker |
US6053482A (en) | 1997-01-31 | 2000-04-25 | Holmes Products Corp. | Humidifier including a water filtration device |
USD400392S (en) | 1997-03-11 | 1998-11-03 | Syratech Corporation | Pitcher |
US6290848B1 (en) | 1997-04-16 | 2001-09-18 | Pur Water Purification Products, Inc. | Filter cartridge for gravity-fed water treatment devices |
US20020005377A1 (en) | 1997-04-16 | 2002-01-17 | Pur Water Purification Products, Inc. | Filter cartridge for gravity-fed water treatment devices |
US5873995A (en) | 1997-05-06 | 1999-02-23 | The Clorox Company | End-of-life indicator for water treatment device |
US6074550A (en) | 1997-07-19 | 2000-06-13 | Brita Wasser-Filger-Systeme Gmbh | Device for indicating the depletion of purifying agent |
US6387260B1 (en) | 1997-08-21 | 2002-05-14 | Electrophor, Inc. | Filtration device for liquid purification |
US6524477B1 (en) | 1997-08-27 | 2003-02-25 | Rich Buhler | Gravity-flow filtration cartridge for the removal of microorganisms and/or other contaminants |
US6270822B1 (en) | 1997-10-27 | 2001-08-07 | Tekquest Industries | Methods for removal of chlorine from water |
USD406003S (en) | 1997-11-10 | 1999-02-23 | Recovery Engineering, Inc. | Water purification pitcher |
US6227382B1 (en) | 1997-12-19 | 2001-05-08 | Corning Incorporated | Water filtration apparatus |
US20020125187A1 (en) | 1998-01-09 | 2002-09-12 | Recovery Engineering, Inc. | Pour-through water treatment dispenser |
US6103114A (en) | 1998-01-09 | 2000-08-15 | Recovery Engineering, Inc. | Pour-through water treatment carafe |
US6428687B1 (en) | 1998-02-16 | 2002-08-06 | Laica S.R.L. | Filter cartridge, particularly for jug water purifiers |
DE19806924A1 (en) | 1998-02-19 | 1999-08-26 | Wts Kereskedelmi Es Szolgaltat | Swimming pool water filter |
US6012232A (en) | 1998-03-28 | 2000-01-11 | Brita Wasser-Filter-Systeme Gmbh | Through-flow cup which can be filled with granule material |
US6202541B1 (en) | 1998-04-17 | 2001-03-20 | Houseware Technology Group | Apparatus for making purified water and related drinks |
US6042725A (en) | 1998-04-20 | 2000-03-28 | Matscorp Ltd. | Water filter cartridge |
US6224751B1 (en) | 1998-04-29 | 2001-05-01 | Brita Gmbh | Water purifying device with means for indicating exhaustion of the purifying medium |
US6773608B1 (en) | 1998-05-13 | 2004-08-10 | Uv Pure Technologies Inc. | Ultraviolet treatment for aqueous liquids |
US6485644B2 (en) | 1998-06-09 | 2002-11-26 | Henry Alan Bowler | Liquid dispenser with closed gravity filter and air breathing system |
US6254768B1 (en) | 1998-07-21 | 2001-07-03 | Corning Incorporated | Water filter carafe |
US6550622B2 (en) | 1998-08-27 | 2003-04-22 | Koslow Technologies Corporation | Composite filter medium and fluid filters containing same |
US20020139746A1 (en) | 1998-08-27 | 2002-10-03 | Evan E. Koslow | Composite filter medium and fluid filters containing same |
US20030111404A1 (en) | 1998-08-27 | 2003-06-19 | Koslow Evan E. | Composite filter medium and fluid filters containing same |
US6238552B1 (en) | 1998-09-04 | 2001-05-29 | Roy T. Shannon | Universal insert for a water purifier |
US6287456B1 (en) | 1998-10-30 | 2001-09-11 | Kimberly-Clark Worldwide, Inc. | Filtration system with filtrate volume indicator |
US6454941B1 (en) | 1998-12-17 | 2002-09-24 | Corning Incorporated | Gravity-flow water filtration device |
US6405875B1 (en) | 1998-12-18 | 2002-06-18 | Corning Incorporated | Water filtration device and method |
US20020020673A1 (en) | 1999-02-19 | 2002-02-21 | Innova Pure Water Inc. | Static filter pitcher |
US6602406B1 (en) | 1999-02-19 | 2003-08-05 | Innova Pure Water Inc. | Static filter pitcher |
US6599427B2 (en) | 1999-02-19 | 2003-07-29 | Innova Pure Water Inc. | Static filter pitcher |
US20010006162A1 (en) | 1999-06-23 | 2001-07-05 | Brad Hollander | Methods and apparatus for disinfecting and sterilizing water in water dispensers using ultraviolet radiation |
US6193894B1 (en) | 1999-06-23 | 2001-02-27 | Brad C. Hollander | Methods and apparatus for disinfecting and sterilizing water in water dispensers using ultraviolet radiation |
US7081225B1 (en) | 1999-07-20 | 2006-07-25 | Hollander Brad C | Methods and apparatus for disinfecting and sterilizing fluid using ultraviolet radiation |
US6565743B1 (en) | 1999-08-31 | 2003-05-20 | Kimberly-Clark Worldwide, Inc. | Portable purification container with cumulative use indicator |
US6841067B1 (en) | 1999-11-02 | 2005-01-11 | Brita Gmbh | Filtration device for liquids |
EP1106225A1 (en) | 1999-12-06 | 2001-06-13 | Brita GmbH | Pressure filter for water |
US20010032822A1 (en) | 2000-01-15 | 2001-10-25 | Kx Industries, L.P. | Device, method, and system for removing contaminants from a liquid |
US7306723B2 (en) | 2000-02-18 | 2007-12-11 | Radford Thomas K | Method and apparatus for water purification |
US7014759B2 (en) | 2000-02-18 | 2006-03-21 | Radford Thomas K | Method and apparatus for water purification |
USD440110S1 (en) | 2000-03-29 | 2001-04-10 | Recovery Engineering, Inc. | Water purification pitcher |
US20020020189A1 (en) | 2000-05-17 | 2002-02-21 | Isamu Namose | Temperature adjustment apparatus |
US6638426B1 (en) | 2000-07-07 | 2003-10-28 | The Clorox Company | Water purifying apparatus |
US20050139540A1 (en) | 2000-10-11 | 2005-06-30 | Innova Pure Water Inc. | Static filtration media vessels |
US20020060176A1 (en) | 2000-10-11 | 2002-05-23 | Mierau Bradley D. | Static filtration media vessels |
US6440302B1 (en) | 2000-11-14 | 2002-08-27 | Herb Leipziger | Portable water purifier |
US20020060175A1 (en) | 2000-11-22 | 2002-05-23 | Wayne Conrad | Sensor for a water treatment apparatus |
US20020060189A1 (en) | 2000-11-22 | 2002-05-23 | Wayne Conrad | Method and apparatus for controlling a household water purifier |
US20020060177A1 (en) | 2000-11-22 | 2002-05-23 | Wayne Conrad | Filter assembly for a household water purifier |
US20020060190A1 (en) | 2000-11-22 | 2002-05-23 | Wayne Conrad | Method and apparatus for monitoring an ozone generator in a household water purifier |
US6475352B2 (en) | 2000-11-22 | 2002-11-05 | Fantom Technologies Inc. | Method and apparatus for monitoring an ozone generator in a household water purifier |
US20020066698A1 (en) | 2000-12-04 | 2002-06-06 | Brunner Michael Scott | Water filtration system and vessel |
US20040060873A1 (en) | 2000-12-25 | 2004-04-01 | Manabu Yanou | Pitcher type water purifier and purification cartridge for the water purifier |
US6478956B2 (en) | 2001-02-27 | 2002-11-12 | Kamaljit S. Kaura | Manually pressurized water filtering container |
US7201840B2 (en) | 2001-08-17 | 2007-04-10 | Dart Industries Inc. | Fluid treatment device and counter mechanism |
US6651824B2 (en) | 2001-08-17 | 2003-11-25 | Dart Industries Inc. | Filter pitcher with ice hopper |
USD459941S1 (en) | 2001-08-17 | 2002-07-09 | D. Scott Miller | Filter lid for pitcher |
US20030034291A1 (en) | 2001-08-17 | 2003-02-20 | Miller D. Scott | Filter pitcher with ice hopper |
US7850859B2 (en) | 2001-08-23 | 2010-12-14 | The Procter & Gamble Company | Water treating methods |
USD454469S1 (en) | 2001-10-05 | 2002-03-19 | Dart Industries Inc. | Pitcher with capped spout |
US20030070979A1 (en) | 2001-10-15 | 2003-04-17 | I-Chung Huang | Percolating steeper |
US6797160B2 (en) | 2001-10-15 | 2004-09-28 | I-Chung Huang | Percolating steeper |
US20030085169A1 (en) | 2001-10-24 | 2003-05-08 | Reid Roger P | Filter cartridge with divided filter bed for gravity-flow use |
US20030196964A1 (en) | 2002-01-31 | 2003-10-23 | Koslow Evan E. | Microporous filter media, filteration systems containing same, and methods of making and using |
US20030205531A1 (en) | 2002-01-31 | 2003-11-06 | Koslow Evan E. | Microporous filter media, filtration systems containing same, and methods of making and using |
US7144533B2 (en) | 2002-01-31 | 2006-12-05 | Koslow Technologies Corporation | Microporous filter media, filtration systems containing same, and methods of making and using |
US20030201231A1 (en) | 2002-01-31 | 2003-10-30 | Koslow Evan E. | Microporous filter media, filtration systems containing same, and methods of making and using |
US20030205529A1 (en) | 2002-01-31 | 2003-11-06 | Koslow Evan E. | Microporous filter media, filtration systems containing same, and methods of making and using |
US6835311B2 (en) | 2002-01-31 | 2004-12-28 | Koslow Technologies Corporation | Microporous filter media, filtration systems containing same, and methods of making and using |
US20030168401A1 (en) | 2002-01-31 | 2003-09-11 | Koslow Evan E. | Microporous filter media, filtration systems containing same, and methods of making and using |
US20030213750A1 (en) | 2002-01-31 | 2003-11-20 | Koslow Evan E. | Microporous filter media, filtration systems containing same, and methods of making and using |
US7011753B2 (en) | 2002-01-31 | 2006-03-14 | Koslow Evan E | Microporous filter media, filtration systems containing same, and methods of making and using |
US6953604B2 (en) | 2002-01-31 | 2005-10-11 | Koslow Evan E | Microporous filter media, filtration systems containing same, and methods of making and using |
US20030205530A1 (en) | 2002-01-31 | 2003-11-06 | Koslow Evan E. | Microporous filter media, filtration systems containing same, and methods of making and using |
US6959820B2 (en) | 2002-01-31 | 2005-11-01 | Koslow Evan E | Microporous filter media, filtration systems containing same, and methods of making and using |
US20030196963A1 (en) | 2002-01-31 | 2003-10-23 | Koslow Evan E. | Microporous filter media, filtration systems containing same, and methods of making and using |
US7008537B2 (en) | 2002-01-31 | 2006-03-07 | Koslow Technologies Corporation | Microporous filter media, filtration systems containing same, and methods of making and using |
US6998058B2 (en) | 2002-01-31 | 2006-02-14 | Koslow Evan E | Microporous filter media, filtration systems containing same, and methods of making and using |
US20030159979A1 (en) | 2002-02-26 | 2003-08-28 | Chau Yiu Chau | Reservoir water treatment |
US6860992B2 (en) | 2002-02-26 | 2005-03-01 | Yiu Chau Chau | Reservoir water treatment |
US20040149642A1 (en) | 2002-12-05 | 2004-08-05 | Vandenbelt Rudy A. | Filter cartridge for a standlone point of use water purification device |
US6953523B2 (en) | 2002-12-05 | 2005-10-11 | Headwaters Research & Development, Inc | Portable, refillable water dispenser serving batches of water purified of organic and inorganic pollutants |
US20040149643A1 (en) | 2002-12-05 | 2004-08-05 | Vandenbelt Rudy A. | Portable, refillable water dispenser serving batches of water purified of organic and inorganic pollutants |
US20060157399A1 (en) | 2002-12-05 | 2006-07-20 | Headwaters R & D, Inc. | Filter Cartridge for a Standalone Point of Use Water Purification Device |
US7387729B2 (en) | 2002-12-05 | 2008-06-17 | Headwaters R & D, Inc. | Filter cartridge for a standalone point of use water purification device |
US7883623B2 (en) | 2002-12-10 | 2011-02-08 | King Technology | Dispensing system |
USD501755S1 (en) | 2003-01-08 | 2005-02-15 | Brita Gmbh | Date memorizer for filter or filter lid |
US20060096925A1 (en) | 2003-02-13 | 2006-05-11 | Ehud Roffman | Water conversion device and method |
US20100176037A1 (en) | 2003-06-26 | 2010-07-15 | Tersano Inc. | System and device for water filtration and purification |
US20060163174A1 (en) | 2003-06-26 | 2006-07-27 | Namespetra Justin L | System and containers for water filtration and item sanitization |
US7708958B2 (en) | 2003-06-26 | 2010-05-04 | Tersano Inc. | System and containers for water filtration and item sanitization |
US7959872B2 (en) | 2003-06-26 | 2011-06-14 | Tersano Inc. | System and device for water filtration and purification |
US7309418B2 (en) | 2003-11-26 | 2007-12-18 | The Clorox Company | Water contaminant indicators |
US20050109683A1 (en) | 2003-11-26 | 2005-05-26 | Joyce Patrick C. | Water contaminant indicators |
US20060260990A1 (en) | 2003-11-26 | 2006-11-23 | The Clorox Company | Water Contaminant Indicators |
US20080314808A1 (en) | 2003-12-03 | 2008-12-25 | Vandenbelt Rudy A | Portable, refillable water dispenser serving batches of water purified of organic and inorganic pollutants |
US20060231476A1 (en) | 2003-12-03 | 2006-10-19 | Headwaters R & D, Inc. | Portable, refillable water dispenser serving batches of water purified of organic and inorganic pollutants |
US7438799B2 (en) | 2003-12-03 | 2008-10-21 | Headwaters R & D, Inc. | Portable, refillable water dispenser serving batches of water purified of organic and inorganic pollutants |
US7378015B2 (en) | 2003-12-18 | 2008-05-27 | The Clorox Company | Filtered water enhancements |
US20090272682A1 (en) | 2003-12-18 | 2009-11-05 | Rinker Edward B | Filtered Water Enhancements |
US20050133427A1 (en) | 2003-12-18 | 2005-06-23 | Rinker Edward B. | Filtered water enhancements |
US20080190827A1 (en) | 2003-12-18 | 2008-08-14 | Rinker Edward B | Filtered Water Enhancements |
US7713482B2 (en) | 2003-12-18 | 2010-05-11 | The Clorox Company | Control scheme for enhanced filtered water systems |
US7678282B2 (en) | 2004-04-08 | 2010-03-16 | Laica S.P.A. | Method of determination of the conditions of exhaustion of a filtering cartridge for filtering carafes with replaceable cartridge and carafe operating in compliance with such method |
US20050224422A1 (en) | 2004-04-08 | 2005-10-13 | Maurizio Moretto | Method of determination of the conditions of exhaustion of a filtering cartridge for filtering carafes with replaceable cartridge and carafe operating in compliance with such method |
US7294277B2 (en) | 2004-04-08 | 2007-11-13 | Laica S.P.A. | Method of determination of the conditions of exhaustion of a filtering cartridge for filtering carafes with replaceable cartridge and carafe operating in compliance with such method |
US20080035582A1 (en) | 2004-04-08 | 2008-02-14 | Maurizio Moretto | Method of determination of the conditions of exhaustion of a filtering cartridge for filtering carafes with replaceable cartridge and carafe operating in compliance with such method |
US20050247609A1 (en) | 2004-04-15 | 2005-11-10 | Laing G B | Fluid treatment system |
US7476312B2 (en) | 2004-04-15 | 2009-01-13 | Trojan Technologies Inc. | Fluid treatment system |
US7107838B2 (en) | 2004-04-19 | 2006-09-19 | Fook Tin Technologies Ltd. | Apparatus and methods for monitoring water consumption and filter usage |
US20050252844A1 (en) | 2004-05-14 | 2005-11-17 | Chau Yiu C | Water treatment unit for bottle or pitcher |
US7670479B2 (en) | 2004-05-24 | 2010-03-02 | PUR Water Purification, Inc. | Fluid container having an additive dispensing system |
US20060191824A1 (en) | 2004-05-24 | 2006-08-31 | Arett Richard A | Fluid container having an additive dispensing system |
USD523280S1 (en) | 2004-05-28 | 2006-06-20 | Progressive International Corporation | Pitcher |
US20060000763A1 (en) | 2004-06-30 | 2006-01-05 | Rinker Edward B | Gravity flow carbon block filter |
US20080110820A1 (en) | 2004-06-30 | 2008-05-15 | Elizabeth Louise Knipmeyer | Gravity Flow Carbon Block Filter |
US20090001011A1 (en) | 2004-06-30 | 2009-01-01 | Knipmeyer Elizabeth L | Gravity flow filter |
US7906019B2 (en) | 2004-12-03 | 2011-03-15 | David J. Elliott | Bacteria deactivation apparatus |
US20060163169A1 (en) | 2004-12-13 | 2006-07-27 | Eckhardt Richard A | Methods and apparatus for the treatment of fluids |
US20060162806A1 (en) | 2005-01-21 | 2006-07-27 | Hengsperger Steve L | Drinking water pitcher having a removable upper reservoir |
US20060163148A1 (en) | 2005-01-21 | 2006-07-27 | Hengsperger Steve L | Filter housing for a drinking water pitcher |
US7513278B2 (en) | 2005-01-21 | 2009-04-07 | Tersano Inc. | Drinking water pitcher having a removable upper reservoir |
US20080190825A1 (en) | 2005-03-18 | 2008-08-14 | Tersano Inc. | Water Sanitazation System Having Safety Features and Removable Filter |
US20060226064A1 (en) | 2005-03-23 | 2006-10-12 | Beckman Robert C | Multiple cartridge carafe filtration |
US20060249442A1 (en) | 2005-04-01 | 2006-11-09 | Yap Walter N | Water filtration system with improved performance |
US7413653B2 (en) | 2005-08-23 | 2008-08-19 | James Dennis Powell | Portable filtered drinking water system |
US20070045169A1 (en) | 2005-08-23 | 2007-03-01 | Powell James D | Portable filtered drinking water system |
US20070108136A1 (en) | 2005-11-15 | 2007-05-17 | Gold Steven K | Fluid filtration assembly |
US20070125713A1 (en) | 2005-12-07 | 2007-06-07 | Harris James M | Water purifier with UV and adsorbent |
US7713496B2 (en) | 2005-12-07 | 2010-05-11 | Crystal Clear Technologies, Inc. | Water purifier with UV and adsorbent |
US7297283B2 (en) | 2005-12-09 | 2007-11-20 | Yakima Filters, Inc. | Container having fluid purification system |
JP2007197857A (en) | 2006-01-25 | 2007-08-09 | Kuraray Co Ltd | Nonwoven fabric composed of fiber made of polylactic acid composition |
US20070209984A1 (en) | 2006-03-09 | 2007-09-13 | Fka Distributing Co. D/B/A Homedics, Inc. | Water Purifier |
US7396461B2 (en) | 2006-03-20 | 2008-07-08 | Filtrex Holdings Pte, Ltd. | Filter cartridge for gravity-fed water treatment device |
US20070215536A1 (en) | 2006-03-20 | 2007-09-20 | Filtrex Holdings, Pte Ltd | Filter cartridge for gravity-fed water treatment device |
US20070221561A1 (en) | 2006-03-22 | 2007-09-27 | 3M Innovative Properties Company | Liquid filtration systems |
US20070278141A1 (en) | 2006-05-15 | 2007-12-06 | Ginger Patera | Water filter and dispenser system |
US20080035552A1 (en) | 2006-05-18 | 2008-02-14 | Hsiung-Che Lee | Multi-function and multi-layer filtration device |
US7510088B2 (en) | 2006-07-13 | 2009-03-31 | Conair Corporation | Liquid filter cartridge |
US20080023402A1 (en) | 2006-07-28 | 2008-01-31 | General Electric Company | Water filtration systems and methods |
US20080023406A1 (en) | 2006-07-28 | 2008-01-31 | General Electric Company | Water filtration systems and methods |
US20080023405A1 (en) | 2006-07-28 | 2008-01-31 | General Electric Company | Water filtration systems and methods |
US20080223797A1 (en) | 2006-09-20 | 2008-09-18 | Omnipure Filter Company, Inc. | Filters with improved media utilization and methods of making and using same |
US20110073551A1 (en) | 2006-09-20 | 2011-03-31 | Omnipure Filter Company, Inc. | Filter modules for improved media utilization and use in generally cylindrical housing |
US7507338B2 (en) | 2006-10-13 | 2009-03-24 | Filtrex Holdings Pte Ltd. | Universal water purifier unit assembly device |
US20080087596A1 (en) | 2006-10-13 | 2008-04-17 | Filtrex Holdings Pte Ltd. | Universal water purifier unit assembly device |
US20080116146A1 (en) | 2006-11-17 | 2008-05-22 | Miox Corproation | Water purification system |
US20100068343A1 (en) | 2006-12-01 | 2010-03-18 | Johann Juergen | Process and device for enriching water with magnesium ions |
US20080202992A1 (en) | 2007-02-26 | 2008-08-28 | Halosource, Inc. | Purifier insert with a tablet dispenser and indicator |
US20080257802A1 (en) | 2007-04-18 | 2008-10-23 | Friel Daniel D | Advanced household water purification means |
US20090039028A1 (en) | 2007-08-07 | 2009-02-12 | Eaton Bradley W | Liquid filtration systems |
US20090039032A1 (en) | 2007-08-07 | 2009-02-12 | Whirlpool Corporation | Portable filtration and ozonation apparatus |
GB2452382B (en) | 2007-08-29 | 2011-01-26 | Uv Corp | Filter Assembly |
US20120012515A1 (en) * | 2007-08-29 | 2012-01-19 | Uv Corporation | Filter assembly |
US20090057241A1 (en) * | 2007-08-29 | 2009-03-05 | Phillip Nauta | Filter assembly |
US8043502B2 (en) * | 2007-08-29 | 2011-10-25 | Uv Corporation | Water pitcher filter |
US20090057220A1 (en) * | 2007-08-29 | 2009-03-05 | Uv Corporation | Filter assembly |
USD590475S1 (en) | 2008-01-15 | 2009-04-14 | The Clorox Company | Element of a water filter |
USD579515S1 (en) | 2008-01-15 | 2008-10-28 | The Clorox Company | Water filter |
US20090202691A1 (en) | 2008-02-11 | 2009-08-13 | Derek Gauger | Coffee making apparatus and method |
US20110000841A1 (en) | 2008-05-29 | 2011-01-06 | Gleb Dmitrievich Rusinov | Filter Cartridge and Method For Producing and Using Thereof |
US20090314703A1 (en) | 2008-06-20 | 2009-12-24 | Beach Kelsey E | System and Method for Demonstrating Water Filtration and Purification Techniques |
US20100006508A1 (en) | 2008-07-09 | 2010-01-14 | The Procter & Gamble Company | Multi-Stage Water Filters |
US20100044291A1 (en) | 2008-08-20 | 2010-02-25 | Chung-Yen Tseng | Pitcher with a water purification module |
US20110084006A1 (en) | 2009-02-25 | 2011-04-14 | Ka Shing Wu | Uv liquid storage and dispensing device |
US8128820B2 (en) * | 2009-02-25 | 2012-03-06 | Mr. Chiaphua Industries Limited | UV liquid storage and dispensing device |
US20100243583A1 (en) | 2009-03-27 | 2010-09-30 | Pur Water Purification Products, Inc. | Droplet Forming Fluid Treatment Devices and Methods of Forming Droplets in a Fluid Treatment Device |
US20100243582A1 (en) | 2009-03-27 | 2010-09-30 | Pur Water Purification Products, Inc. | Droplet Forming Fluid Treatment Devices and Methods of Forming Filtered Droplets in a Fluid Treatment Device |
Non-Patent Citations (2)
Title |
---|
Office Action, dated Jan. 26, 2011, on corresponding Canadian application No. 2,638,921. |
Wikipedia Article on Polyactic Acid; 5 pages; downloaded Nov. 22, 2010. |
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US20120012515A1 (en) | 2012-01-19 |
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